Alpha Construction Services

Also listed as: Sister Holdings Inc

● Active — license status verified against CSLB public data as of November 6, 2026

CSLB license	#495757
Classifications	B — General Building · C-10 — Electrical
Office of record	689 W 17TH Street Costa Mesa, CA 92627 Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)	(818) 554-2443
Contractor bond	$25,000 — North River Insurance Company (the)
Workers' comp (CSLB record)	Exempt
Business type	Corporation
License issued	July 28, 1986
License expires	June 30, 2027

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Data source: CSLB public records as of November 6, 2026. License status can change at any time — verify live at CSLB before signing a contract.